Just trying them out for the first time on something more than a sphere.

The shape is made of a dodecahedron and an icosohedron.  count 50000,
but I think it used more like 5 million.  Dispersion 1.1, with 100
samples.  One light source (area light up and to the right).  Photons
took 1.5 hours on a pentium 233, rendering took 40 hours on a P3 500
that was used for games for at least a third of that time.

I suppose the banding artifacts are down to not using enough photons?
And does anyone know why the caustics are so bright?  They look a little
unreal to me.

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